Op 27-5-2020 om 23:22 schreef Marco Langbroek via Seesat-l: > > The launch of Crew Dragon Demo-2 was scrubbed unfortunately. > > A new attempt is scheduled for 30 May near 19:22 UT. > > The following estimated elset is for launch on 30 May 19:22:00 UT. If a better > launch time (to the second) becomes available, I wil, post an update. > > > CREW DRAGON DEMO-2 for launch 30 May 2020 19:22:00 UT > 1 70000U 20999A 20151.80474535 -.00003603 11390-4 00000+0 0 04 > 2 70000 51.6423 075.0039 0122953 45.6251 315.4951 15.99554646 01 The Spaceflight Now website (hat-tip to pmafer) reports an apparent launch time of 3:22:45 p.m. EDT = 19:22:45 UT https://spaceflightnow.com/2020/05/27/stormy-weather-delays-crew-dragon-launch-to-saturday/ Under the assumption that this is correct, this results in the following elset estimate for the May 30 launch attempt: CREW DRAGON DEMO-2 for launch at 30 May 19:22:45 UT 1 70001U 20999A 20151.80521989 -.00003603 11390-4 00000+0 0 01 2 70001 51.6423 075.1752 0122953 45.6251 315.4951 15.99554646 05 I have seen no sub-minute launch times directly from SpaceX or NASA anywhere yet, so treat this cautiously, as without an authorative source this remains rather apocryphal. I must say I find it very annoying that the basic launch information of interest to us (e.g. precise launch times, initial orbital altitudes and inclinations aimed for etc.) for these commercial launches is lacking. The Press kits read more like hyped Company PR leaflets than that they really contain clear information regarding the launch (like they used to do), even though they are pages longer than they used to be. It is all more concerned with a show-element and less with actual informative content. This is a bad development. In the Shuttle era, Space Shuttle TLE's and State Vectors aimed for would be published in advance by NASA on a dedicated website. It is a sad turn of events that this is not happening now (they still do this for the ISS, but not for the commercial cargo or crew flights). I have no doubt that the commercial companies involved are so restrictive with pertinent information from a viewpoint of propriety and NASA is bound by this, but I find that attitude very short-sighted, and a clearly missed opportunity in terms of outreach. (I have the same qualms with ESA by the way, which is equally opaque in the release of basic launch information on space missions). - Marco ----- Dr Marco Langbroek - SatTrackCam Leiden, the Netherlands. e-mail: sattrackcam_at_langbroek.org Station (b)log: http://sattrackcam.blogspot.com Twitter: _at_Marco_Langbroek ----- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu May 28 2020 - 09:28:20 UTC
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